mypy

gh-142913: Add test case for interpreter generator w/ overridden opco… #19144

Job	Run time
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/build	21s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Tools/clinic	18s
Run mypy on Tools/jit	22s
Run mypy on Lib/tomllib	18s
Run mypy on Lib/test/libregrtest	20s
Run mypy on Tools/peg_generator	18s
	2m 56s

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